Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

Process Sequence Design of Longneck Flange by Cold Extrusion Process

냉간압출을 이용한 롱넥 플랜지 성형에 대한 공정설계

  • 임중연 (동국대학교 기계공학과) ;
  • 황병복 (인하대학교 자동화공학과) ;
  • 김철식 (동국대학교 기계공학과)
  • Published : 1999.04.01
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Abstract

This paper is concerned with the process sequence design of longneck flange forming by using cold extrusion with thick hollow pipe. The conventional hot forming process to produce a longneck flange is investigated by thermo-viscoplastic finite element method to observe the metal flow in detail and evaluate design requirements. Based on the results of simulation of the current hot forming process, design strategy for improving the process sequence are developed using the thick hollow pipe. The main goal is to obtain an appropriate improved process sequence which can produce the required product most economically without tensile cracking, workpiece buckling, and overloading of tools. Newly process condition such as semi-die angle, reductio ratio of cross-sectional area of axisymmetrical extrusion process. The final designed process can provide very useful guidelines to other flange forming industries.

Keywords

References

  1. J. Eng. Ind. Trans. ASME v.95 New solution to Rigid-Plastic Deformation Problems Using a matrix Method C.H.Lee;S.Kobayashi
  2. Int. J. Mech. Sci. v.22 A Coupled Analysis of Viscoplastic Deformation and Heat Trasfer-Ⅰ N.Rebelo;S.Kobayashi
  3. Int. J. Mech. Sci. v.22 A Coupled Analysis of Viscoplastic Deformation and Heat Transfer-Ⅱ N.Rebelo;S.Kobayashi
  4. Proceedings of NAMRC A formal approach to desining forming sequence for cold forging K.Lange;G.Du
  5. J. Mech. Working Tech. v.14 Finite element analysis of a five stage colding heading process A.A.K.A1-Sended;P.Hartley;C.E.N.Struges;G.W.Rowe
  6. Int. J. of machine Tools and Manufacture v.35 Process Sequence Design in Cold Extrusion to Form Axisymmetric Shell Body Joong-Yeon Lim;S.Kobayashi
  7. 한국소성가공학회 v.6 no.4 스트레치포밍을 이용한 랜딩기어의 내면벽에 대한 공정설계 강범수;임증연;배진영
  8. J. of Material Processing Technology v.75 no.1 A Process Sequence Design of an axle-housing by cold extrusion using thick-walled pipe 박철;임중연;황명복
  9. J. of Engineering for Industry v.101 Ductile Fracture in Axisymmetric Extrusion and Drawing C.C.Chen;Oh.S.I.;S.Kobayashi
  10. J. of Engineering for Industry v.101 Ductile Fracture in Axisymmetric Extrusion and Drawing C.C.Chen;Oh,S.I.;S.Kobayashi
  11. J. Mech. Phys. Solids v.34 no.1 The Analysis of Void Growth that leads to Central Bursts During Extrusion N.Aravas
  12. Proc. North America Metalworking Res. Conf. v.1 Deformation mechanics and workability in upsetting solid circular cylinder S.Kobayashi;C.H.Lee
  13. Metal Forming : Fundametals and Allpications T.Atlan;S.I.Oh;Gegel,H.L.
  14. Numerical Modelling of Material Deformation Processes Peter Hartley;Ian Pillunger;Clive Strugess
  15. 한국소성가공학회지 v.6 no.3 냉간압출시 Chevron Crack방지에 대한 고찰 최영순;이정환
  16. J. Mech. Working. Tech. v.14 Forming-sequence design for multistage cold forging K.Sevenler;P.S.Raghupath;T.Altan
  17. Journal of Engineering for Industry, Trans. ASME, Series B Analysis of Central Bursting Defects in Extrusion and Wire Drawing B.Avitzur
  18. A Technical Report(booklet 2913) from Bethlehem Steel's Homer Research Laboratiories Prevention of Central Bursting in Cold Extrusion
  19. 한국소성가공학회지 v.1 no.1 유한요소법을 이용한 전방 압출공정의 내부결함에 관한 연구 김태형;이진희;권혁홍;김병민;강범수;최재찬
  20. Metal Forming and the Finite-Element Method S.Kobayashi;S.I.Oh;T.Altan